The Locked Room

While on vacation at a resort hotel in the West Indies, Miss Marple correctly suspects that the apparently natural death of a retired British major is actually the work of a murderer planning yet another killing.

Faced with two false confessions and numerous suspects after a despised civil magistrate is found shot in the local vicarage, Detective Inspector Slack reluctantly accepts help from Miss Marple.

A town busybody is poisoned at a busy reception in the home of famous film star Marina Gregg. The poisoned drink seemed intended for Marina, but Miss Marple is not so sure. She sets out to discover the true identity of the killer before he or she can strike again.

At the insistence of Ruth Van Rydock, an old schoolfriend who is convinced that there is something wrong, Miss Marple agrees to visit 'Stonygates', the country house of Ruth's sister.

During a murder hunt game at a country house, to which Hercule Poirot is invited as an "expert", a real murder occurs.